Program too big?

It's a little frustrating, because I can't really tell if I am doing something wrong and what I can do to mitigate the issues.

There were no changes to settings or the program and I wasn't able to do anything with it this morning. This fragility with the interaction between the IDE and the device makes the IDE difficult to work with. I understand the complications of creating a device like this, and I would really like some insight into what is going on when I execute an upload/flash:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
>
=undefined
Erasing Flash...
Writing......................
Compressed 114368 bytes to 20259
Checking...
Done!
Running onInit()...
ERROR: Prompt not detected - upload failed. Trying to recover...
in function "registerLine" called from line 1 col 246
....registerLine("4,CONNECT",h),c.regist­erLine("0,CLOSED",k),c....
                              ^
in function "registerLine" called from line 1 col 275
...c.registerLine("0,CLOSED",k),c.regist­erLine("1,CLOSED",k),c....
                              ^
in function "registerLine" called from line 1 col 304
...c.registerLine("1,CLOSED",k),c.regist­erLine("2,CLOSED",k),c....
                              ^
in function "registerLine" called from line 1 col 333
...c.registerLine("2,CLOSED",k),c.regist­erLine("3,CLOSED",k),c....
                              ^
in function "registerLine" called from line 1 col 362
...c.registerLine("3,CLOSED",k),c.regist­erLine("4,CLOSED",k),ex...
                              ^
in function "registerLine" called from line 1 col 391
...c.registerLine("4,CLOSED",k),exports.­at=c,require("NetworkJS...
                              ^
in function "cmd" called from line 2 col 300
...ter AT+RST");else return l}),digitalWrite(x,1),digitalWrite(...
                              ^
in function "p" called from line 2 col 241
...")):setTimeout(d,0,null)})})
                              ^
in function "connect" called from line 1 col 169
...onnected!'),initProcess();});
                              ^
in function called from system
ERROR: Error processing Serial data handler - removing it.
Execution Interrupted during event processing.
New interpreter error: CALLBACK
>echo(1)
=undefined
New interpreter error: BUFFER_FULL

Then I turn minification off (couldn't do anything without turning it on yesterday) and it loads the program, although it gives an error, so the behavior is very inconsistent:

 _____                 _
|   __|___ ___ ___ _ _|_|___ ___
|   __|_ -| . |  _| | | |   | . |
|_____|___|  _|_| |___|_|_|_|___|
          |_| http://espruino.com
 1v95 Copyright 2017 G.Williams
>
=undefined
Erasing Flash...
Writing........................
Compressed 114368 bytes to 21752
Checking...ERROR: Prompt not detected - upload failed. Trying to recover...
Done!
Running onInit()...
>echo(1)
=undefined
Connected!
Init:  Wed, 27 Dec 2017 13:51:06 GMT
Starting logging
Starting server